So I have an FAS3020 running 7.0.2 It has been repurposed to handle production data and as such we need to back it up.

I've attached a DLT8000 tape drive to is via SAN (fiber->scsi bridge), and ontap sees the tape:

    Tape drive (em2dir1:2-26.146L4)  Quantum DLT8000
    rst4l  -  rewind device,        format is: 81633 bpi 40GB cmp DLTIV
    nrst4l -  no rewind device,     format is: 81633 bpi 40GB cmp DLTIV
    urst4l -  unload/reload device, format is: 81633 bpi 40GB cmp DLTIV
    rst4m  -  rewind device,        format is: 85937 bpi 70GB cmp DLTIV
    nrst4m -  no rewind device,     format is: 85937 bpi 70GB cmp DLTIV
    urst4m -  unload/reload device, format is: 85937 bpi 70GB cmp DLTIV
    rst4h  -  rewind device,        format is: 98250 bpi 40GB     DLTIV
    nrst4h -  no rewind device,     format is: 98250 bpi 40GB     DLTIV
    urst4h -  unload/reload device, format is: 98250 bpi 40GB     DLTIV
    rst4a  -  rewind device,        format is: 98250 bpi 80GB cmp DLTIV
    nrst4a -  no rewind device,     format is: 98250 bpi 80GB cmp DLTIV
    urst4a -  unload/reload device, format is: 98250 bpi 80GB cmp DLTIV

There is media in said tape, it is NOT write protected, and I've tried other media as well as other tape drivers (I actually have 4 DLT8000 drives assigned to the machine)

Whenever I try to dump data to tape manually : dump 0f nrst4a /vol/vol0/etc
...
Fri Jun 29 10:03:24 PDT [tape.cmd.chkCondErr:error]: Device em2dir1:2-26.146L4:
Check Condition: SCSI Op Code Write(06)) (CDB 0x0a: 0x00fc00 bytes): data protec
t - Write protected (0x7 - 0x27 0x0 0x0).
DUMP: Tape write failed - new tape is broken or write protected.
…

When issuing mt commands (rewind specifically) I get this error:
Fri Jun 29 10:03:07 PDT [scsi.cmd.checkCondition:error]: Device em2dir1:2-26.14
L4L4: Check Condition: CDB 0x15: Sense Data SCSI:data protect -  (0x7 - 0x27 0x
 0x0)(1).

Any ideas? I've scoured NOW, nothing seems to resolve my issue.
__________________________________________________________
Ken Williams
Storage Administrator, Business Technology Operations
Sacramento Municipal Utility District
E-Mail: kwillia@smud.org
Phone: (916) 732-6744
Cell: (916) 240-4213